Water heater



FIG. 1 is a perspective view of a water heater design showing my new design.

FIG. 2 is a front view of a water heater.

FIG. 3 is a rear view of a water heater.

FIG. 4 is a left side view of a water heater.

FIG. 5 is a right side view of a water heater.

FIG. 6 is a top view of a water heater.

FIG. 7 is a bottom view of a water heater; and,

FIG. 8 is a rear side perspective view of a water heater.

The broken lines in the drawings depict portions of the water heater that form no part of the claimed design. 

CLAIM The ornamental design for a water heater, as shown and described. 